I am running into a strange issue. I backed up my NAND, converted it to EmuNAND, and booted into GW mode. I go into settings to check the version and see GW3D 4.5.0-10U. Good. I then try and back out and it freezes and when it comes back, it is no longer in gateway mode and the setting menu shows Ver. 4.5.0-10U. It's like it reboots when I try and close the settings from within gateway mode.
This is normal. Exiting from the System Settings app is equivalent to rebooting the console without turning it off, which would cause the 3DS to boot into the physical NAND.
Can anybody explain to me what you have to do after you created a backup System Nand from your 3ds? what do you do with that SD card? Do you deleted the file that in the 3ds SD card or keep it in there?
You should put the file that is created in the SD card as a result of the system NAND backup into a safe place such as your computer. You will need this file in case you accidentally update your system NAND instead of the emuNAND.